User Manual of A90 Series Inverter Fig. 4-2 Flowchart of Menu Mode Selection 4.2.1 Full menu mode ( -- A -- ) In the full menu mode, press the ENTER key to enter the Level 2 menu and select any function code. Then press the ENTER key to enter the Level 3 menu and view or modify the function code. Except for a few special ones, the function codes needed by general users can be modified. The entire process from the initial status of power-on to change of the value of the function code F03.28 to 5.28 in the full menu mode is shown in Fig. 4-3. 49